These drivers GeForce 191.56 WHQL versions are for Quadro. (For the HP Workstation).

Dated 09 Otobre 2009, these pilots weigh about 100 MB.
They make these corrections:

FIXED:
- Resolves an issue that occurs on systems with dual NVIDIA Quadro FX 580 Graphics Cards, where the NVIDIA Control Panel is not available.
- Resolves an issue that occurs on systems with an NVIDIA Quadro NVS 295 Card, where two playing media files within 15 minutes causes the Microsoft Windows Media Player to stop working.
- Resolves an issue that occurs on systems with dual NVIDIA Quadro FX 1700 or dual NVIDIA Quadro Graphics Cards 770M, where only three displays are available instead of four.
- Resolves an issue that occurs on systems running HP RGS Software, where enabling two monitors in DualView mode causes the same content to be displayed on both heads.
- Resolves an issue that occurs on systems with dual NVIDIA Quadro FX 580 Graphics Cards, where certain applications do not display with a DisplayPort monitor connected to each NVIDIA Quadro FX 580 card.
- Resolves an issue that occurs on systems with Dual NVIDIA Quadro NVS 450 Graphics Cards, where the Microsoft Windows Device Manager shows 16 monitors instead of two.
- Resolves an issue where the Unisys CADmeister Software displays incorrect lighting and surface symbols.
- Resolves an issue that occurs on systems with an NVIDIA Quadro FX 3800, Quadro FX 4800 or Quadro FX 5800 Graphics Card, where visual distortion is seen when using DisplayPort.
- Resolves an issue that occurs on systems with an NVIDIA Quadro FX 4800 Graphics Card, where OpenGL applications experience a slowing of the frame rate over time.